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G. W. BLAKE. Stop-Valve.

No. 224,381. Pa't e nted Fb, 10, 188.0.

HOTO UTADGRAPHER, WASHINGTON D c UNITED a. STATES PATENT OFFICE.

GEORGE W. BLAKE, OF NEW YORK, N. Y., ASSIGNOR TO JOHN T. KELLY AND GEOBGE M. JONES, OF PITTSBUBG, PA.

STOP-VALVE.

SPECIFICATION forming part of Letters Patent No. 224,381, dated February 10, 1880.

Application filed J nly 11, 1879.

- script-ion, reference being had to the accompapying drawings, forming part of this specifica- This invention, although more particularly designed to be applied to steam-radiators, is applicable to stop-valves for controlling the flow of both steam and water.

The invention consists in the combination,

with the stuffing-box of a stop valve or cock,

of a chamber permanently attached to the shell of the valve and surrounding said stufl ing-box, a cap removable to permit the packing or adjustment of the stuffing-box, and a waste-pipe connected to said chamber below.

or back of the cap, where it provides for the removal of the cap without disturbing its own connection with the chamber.- I

Figure 1 represents a longitudinal section of a stop-valve suitable for a steam-radiator or hot-water apparatus, constructed in accordance with my invention, and Fig. 2 an exterior longitudinal view of the same. The valve here represented does not differ in its general construction from the ordinary globe stop-valve used in connection with steamradiators and hot-water apparatus for heatmg purposes, and may occupy either an upright, horizontal, or'other position, A being the shell of the valve, provided with suitable inlet and outlet nozzles; B, the valve proper, and 0 its screw-stem, working through a screw box or nut, -D, and stuffing -box E. Here, however, the similarity ends; and permanently attached to and forming part of the shell is a chamber, G, arranged to surround the stuffing-box E, and. having attached to it,

at or near its lowest part, ,a waste-pipe, H, for carrying ofl water which leaks through or past the stuffing-box, also being provided with a screw or other removable cap, I, on the cham- 5 her G, above or beyond the stuffing-box, to prevent water from being blown out of the chamber, excepting through the waste-pipe, and to give access to the valve when required; also to protect the stufling-box from being improperly removed or unscrewed.

The chamber G, permanently attached to the shell of the valve, essentially differs from aremovable chamber provided with a closed top, secured upon the shell below the stuffing-box and provided with a waste-pipe extending from it, as in such construction it isnecessary, in order to pack the stufling-box, to disconnect the waste-pipe from the chamber before removing it. When a joint is thus often broken it is difficult to make it tight, and leakage may take place at the connection between the wastepipe and the chamber.

As the chamber G is permanently attached to the shell of the valve, the stufiing-box may be repacked as often as necessary by simply removing the cap, and the connection between the waste-pipe and chamber need never be disconnected as long as the valve remains in its place.

What 1 claim as my invention, and desire to secure by Letters Patent, is-

The combination, with the stufling-box of a stop valve or cook, of a chamber, G, permanentlyattached to the shell of the valve and surrounding said stuffing-box, a cap, I, removable to permit the packing or adjustment of the stuffing-box, and a waste-pipe, H, connected to said chamber below or back of the cap, where it provides for the removal of the cap without disturbing its own connection with the chamber, substantially as specified.

GEO. W. BLAKE. Witnesses:

ALFRED BURHORN, FREDK. HAYNES. 

